Air-pump.



J. K. DALTON.

AIR PUMP.

APPLIOATION FILED FEB. 25, 1914.

1,117,001. 7 Patented Nov. 10, 1914.

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J. K. DALTON.

AIR PUMP.

APPLIGATION FILED FEB. 25, 1914.

Patented Nov. 10, 1914.

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' rectly by the expansive force of the gases UNITED STATES rarn'ivr orrros.

JAMES K. DALTON, orWAvEn Y, 01110.

AIR-PUMP.

To all whom it may concern Be it known that I, J AMES K. DALTON, a citizen of the United States, residing at Waverly, in the county of Pike and State of Ohio, have invented new and useful Improvements in Air-Pumps, of which the following is a specification.

The invention provides an air compressor particularly designed for motor vehicles for inflating tires and charging tanks or reservoirs with air under pressure, such compressor being coupled directly to one of the cylinders of the engine to be operated diduring combustion.

The invention provides a mechanism of the character hereinbefore stated'comprising a power cylinder anda compressor, said power cylinder being adapted to be coupled to an engine cylinder to be operated by the expanding gases thereof and the compressor having its piston connected with the piston of the power cylinder to move therewith, the novelty residing. chiefly in the peculiar construction and arrangement of the several parts whereby the air and gases are controlled in their inflow and outflow during the operation of the invention.

The invention consists of the novel fea tures, details of construction and combina- -tion of parts, which hereinafter will be more particularly set forth, illustrated in the accompanying drawings, and pointed out in the appended claims.

Referring to the drawings, forming a part of the specification, Figure 1 is a vertical central section of an air pump embodying the invention, showing the samecoupled to the cylinder of an engine of the internal combustion variety. Fig. 2 is a detail view of the upperportion of the air compressing cylinder. Fig. 3 is a top plan view of the air compressing cylinder. Fig. 1 is a sectional view on the line w-w of Fig. 1..

Corresponding and like parts are referred to in the following description, and indicated in all the views of the drawings, by the same reference characters.

The power cylinderlis closed at its lower end by means of a cap 2 and at its upper end by means of a cap 19, said caps being secured to the cylinder in any manner. short tube 4 is coupled to the cap 2 and connects the power cylinder with a plug 66, which is threaded into the end or other part of the engine cylinder A. The lower end Specification of Letters'Patent. Application filed February 25, 1914. Serial No. 820,980.

ofthe tube 4 is finished to provide a valve seat ag'ainst' which a valve 8 closes, said valve being attached to the lower end of a stem 9, which passes through thecylinder 1. A cylinder 21 extends from the cap 19 in linewith the cylinder 1, and preferably forms a part ofthe cap 19. The upper end of the cylinder 21 is made thick and'heavy,

as indicated at 22, and isclosed 'at'its upper end, the latter having a central opening formed therein which is internally threaded to receive the upper end of a tube 1-1,the latter extending through the cylinder 21 and cylinder 1 and having a valve seat at its lower end against which a valve 10 closes, vsaid valve being loose upon the stem 9 and pressed against its'seat by means of an exratenteanov.1o,'1e14..

pansible helical spring 7 mounted upon the lower end of the stem 9 and confinedbetween the valves 8 and 10. A piston '12 is arranged to operate in the cylinder 1 and is normally held'at its lowest'position in such cylinder by means of an expansible helical spring 18, which is arranged within thecylinder 1 and confined between the cap '19 and piston 12. A tube-12 extends upwardly from the piston 12 and is slidable upon the tube 11 and within thecylinder 21.

The tube 12 is of a length so that when the piston l2.is at the limit ofits down stroke the upper end of such tube is at the lowerv endof the cylinder 21.

the same reaches the .limit of its down stroke. a

The" tube 12 forms 'a hollow rod or stem A washer 6 is lo- I 'cated upon the inner side of the cap 2 and for thepist'on 12 and its lower end is slightly enlarged and above such enlargement the.- tube 12 is formed wlth an inner annular extenslon 12", whlch engages the tube 11- and assists materially'in directing the pis- I '9 ton 12 in its reciprocating movements.

piston is provided at the upper end of -the tube 12 and is adaptedto operate in-the cylinder- 21 and serves uponthe in stroke to draw a charge of air into the cylinder 1 21 and upon the outstroke to compress and force such air from the cylinder into" the part to be charged. The upper end of the -tube 12 is enlarged and an extension 12:

the space formed between the tube 11 and inner wall of the cylinder 21. A packing tube.

ring 14 is located exterior to the rim of the ring 13 and a packing ring 15 is arranged upon the interior of the extension 12, both packing rings 14 and 15 being confined between edge portions of the ring 13 and the enlargement at the upper end ofthe tube 12*. These several parts constitute elements of the piston located at the upper end of the tube 12", the packing rings 14 and 15 maintaining a close joint between the piston and the Walls of the cylinder 21 and tube 11.

The tube 11 is threaded into the upper end of the thickened part 22 of the-cylinder 21 and is made secure by means of a lock nut 23 threaded to the projecting end of the It will thus be understood that the tube 11 is fixed. A cap 24 has a snugfit upon the thickened end 22 of the cylinder 21 and is rotatable upon the part22 and is formed in its sides at opposite points with inclined slots 41 through which extend parts projecting outwardly from the thickened end portion 22 of the cylinder 21. The upper end of the stem or rod 9 is connected with the cap 24 and moves therewith. WVhen the cap 24 is turned in one direction it is moved lengthwise of the cylinder 21, thereby unseating the valve 8 and when the cap 24 is turned in the opposite direction it moves outward upon the cylinder 21 to effect a seating of the valve 8. The longitudinal movement of the cap 24 is effected by the inclined slots 41 and the parts pro jecting through such slots. A tube 26 projects laterally. from the cap 24 and receives a pin 31 which is slidable therein, the inner end of such pin being adapted to extend through an opening in a side of the cap 24 and enter one of two openings 32 formed in a side of the part 22, thereby holding the cap in either one of its extreme positions. A

- washer 36 is secured to the outer end of the pin 31 and engages the outer end of a finger piece 25 which is slidable upon the outer end of the tube 26. An expansible helical spring 27 mounted upon the pin- 31 normally exerts an inward pressure thereon to hold the inner end of such pin in either one of the openings 32. lVhen the finger piece 25 is drawn outward the inner end of the pin 31 is disengaged from the part 22 of the cylinder, thereby admitting of the cap 24 being turned, said cap being secured in the required position, by entrance of the inner end of the pin 31 into the desired opening 32. The cap'24 has the upper end of the rod or stem 9 connected thereto, hence longitudinal movement of thecap effects a corresponding movement of'the stem 9, whereby the valve 8 may be opened or closed. Openings 36 are formed in the upper end of the cap 24 for the ingress and egressof air when the compressor is not working. These openings are adapted to be closed by meansof a part 34, which is in the nature of a shallow cup, the bottom portion of which is formed with openings to register with the openings 36 in one position of the cup, but which close the openings 36 when such cup 34 is moved to a different position. The cup 34 is rotatably mounted upon the upper end of the rod or stem 9 and is formed at one side with an extension 33 to which a catch 33 is pivoted, said catch being adapted to engage a part of the finger piece 25 1 so as to hold the cup 34 in a given position. The cup '34 is adapted to receive a small quantity of liquid fuel when it becomes necessary to prime the engine cylinder A,

, said fuel passing from the cup through the ,tube 11 into the cylinder when the valve 8 is open, the valve 10 opening automatically on the suction stroke of the piston.

The cylinder 21 is provided at its upper end with an inlet and an outlet, the inlet being controlled by means of a valve 42 and the outlet by means of a valve 37. These valves may be of any construction and constitute the extensions which project from the part 22 of the cylinder and pass through inclined slots 41 of the cap 24. Upon the down stroke of the piston operating in the cylinder 21 air is drawn into such cylinder through the valve controlled inlet 42, the

valves controlling the outlet 37 closing and upon the outstroke of such piston the valve controlling the inlet closes andthe valve of the outlet opens. A flexible tube 48 is coupled to the valve 37 and is adapted to con vey the air from the compressor to the required point of use.

hen the valve 8 is seated the cylinder of the engine to which the device is coupled operates in the usual manner for driving the machine or the parts to be operated. Upon opening the valve 8 and closing the openings 36 the piston 12 is caused to move outward in the cylinder 1 when the gaseous mixture is ignited in the cylinder A, therecylinder 21 to be forced therefrom at the next outward movement of the piston 12. \Vhen the valve 8 is open and the openings 36 uncovered the air is drawn into the cylinder A through the openings 36, tube 11 and connection 4 and passes out through the exhaust of the cylinder A in the usual way. The valve 10 opens to admit the air, but closes to prevent escape of the same through the tube 11. In this manner the cylinder A of the engine is cooled.

From the foregoing description taken in Having thus described the invention what is claimed as new, is rk 1. An air compressing device of the character specified comprising alined power and air compressing cylinders, the latter being of less diameter thanthe former, a tube extendingthrough the cylinders and connected at its outer end to the outer end of the air compressing cylinder, said tube having a valve seat at its inner end, a valve for closing the inner end of such tube, means for controlling the admission of air into the outer end of the before mentioned tube, a piston arranged to operate in the power cylinder, and a piston arranged to operate in the compressing cylinder and connected with the first mentioned piston to move therewith.

2. In air compressing means of the character specified the combination of alined cylinders of diiierent diameters, the smaller cylinder having a valve controlled inlet and a valve controlled outlet at its outer end, a tube extending through the two cylinders and connected at its outer end with the outer end of the smaller cylinder and provided at its inner end with a valve seat, a valve for closing the inner end of the tube, means for regulating the admission of air into the outer end of the said tube, a second tube slidable upon the first mentioned tube, a piston at the inner end of the second tube arranged to operate in the larger cylinder,

and a second piston at the opposite end of the second tube and arranged to operate within the smaller cylinder.

3. In an air compressor of the character specified the combination of alined cylinders, one of such cylinders having a valve controlled inlet and a valve controlled outlet and the other cylinder having a valve controlled outlet, a tube extending through the cylinders, a valve for closing the inner end of the tube, means for regulating the admission of air into the outer end of said tube, means for positively opening or closing the valve outlet of the second cylinder, and cor,- nected pistons arranged to operate in the respective cylinders.

4. In combination air compressing and power cylinders, the former having a valve controlled inlet and a valve controlled outlet and the latter having a valve controlled outlet, means mounted upon the outer end of the air compressing cylinder and having 'connectionwith the valve for closing the outlet of the power cylinder, and connected pistons arranged to operate in the respective cylinders.

5. In combination alined air compressing and power cylinders, the latterv having a valve controlled outlet and the former having a valve controlled inlet and a valve.

controlled outlet, a tube extending through the cylinders and having a valveseat'at its inner end, a valve for closing against the valve seat atthe inner end of thetube, means for admitting air into .the outer end of such tube, a stem extending through the tube and cylinders and connected with the valve controlling the outlet of the power cylinder,

mean's'mounted upon the outer end of the compressing cylinder and connected with said stem for operating the same to open or close the valve regulating the outlet of the power cylinder, and connected pistons arranged to operate in the respective cylinders and slidably mounted upon the before mentioned tube.

6. In combination a power cylinder having an outlet, an air compressing cylinder in line with the power cylinder and provided at its outer end with a valve controlled inlet and a valve controlled outlet, a'tube. extending through the cylinders and connected at one end with the outer end of the air compressing cylinder and provided at its inner end with a valveseat, a valve closing the inner end of the tube, a valve for closing the outlet of the power cylinder, a stem connected with the last mentioned valve and passing through the valve at the inner end of the tube and through the latter, means mounted upon the outer end of the compressing cylinder and connected with said stem to effect an opening or a closing of the valve at the outlet of the power cylinder, and connected pistons arranged to operate in the respective cylinders and slidably mounted upon the before mentioned tube.

7. In combination alined aircompressing and power cylinders, the latter having an outlet and the former being provided with a valve controlled inlet and a valve controlled outlet, a cap fitted to the outer end of the air compressing cylinder and having an inclined connection therewith, a valve for closing the outlet of the power cylinder, a stem connected with such valve and with,

the before mentioned cap, a tube extending through the cylinders and surrounding the.

ply of air to the outer end of such tube, a"

spring actuated valve mounted upon the inner end of the stem and closingthe inner end of the tube, and connected valves ar-- clined slots for the passage therethrough of.

the inlet and outlet controlling valves of such cylinder, a stem connected with the cap and passing through the cylinders, a valve at the inner end of such stem for closing the outlet of the power cylinder, a tube extending through the cylinders and having a valve seat at its inner end and connected at its outer end with the air compressing cvlinder, means mounted upon the cap for regulating the admission of air into the said tube, a valve mounted upon-the stem and closing the inner end of the tube, and connected pistons arranged to operate in the respective cylinders and slidably mounted.

upon the before mentioned tube.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES K. DALTON.

WVitnesses:

Pence HU'r'r, W. F. TAYLOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Yatents.

' Washington. D. C. 

